Damp Proofing Walls

TUTORIAL 6:

DAMP PROOFING WALLS (PLASTER AND FACE BRICK)

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Determining your product requirement:

• Measure area to which paint is to be
• Depending on surface to which the product is to be applied, determine which products are
• Check the Theoretical Spread Rates (TSR) on each of the specified products and see how many coats of each are recommended, then calculate what quantities of each product you will require, remembering to make adjustments for the porosity of each surface. TSRs are based on products applied to smooth, sealed surfaces. (E.g. an unsealed scratch plaster surface will absorb more paint than a sealed smooth one, so allow for a lower spread rate).
• Check out the specifications on all the top coat choices (referring to the relevant data sheets) and decide which is right for

RISING DAMP BELOW AND UP TO DAMP PROOF COURSE PREVIOUSLY PAINTED SURFACES (TEMPORARY FIX)

Surface Preparation

1. Remove all loose damaged paint and
2. Poison damaged area with Ushevu diluted 1litre Ushevu: 19 litres
3. Allow to react for 24 hours, then dry

Application Method

1. Apply 1 coat DampPrime diluted with 10% Mineral Turps. Allow to dry. DampPrime is only effective on raw plaster, only apply DampPrime to areas where paint has been removed exposing raw plaster.
2. Apply a second coat of DampPrime Allow to dry.
3. Now patch plaster with suitable patching compound like Paintrcors FlashPatch Exterior, only if scarring is 5mm or less.
4. If scarring is more than 5mm deep, then patch with sand, cement and water, replace 50% of the water with Paintcors AcryLatex to improve Allow

48 hours to dry.

5. Spot prime repaired areas with 1 coat of AcrylUnder. Allow to
6. Apply acrylic top coats of your (Elegance, Essence, Pristina, Grantex, Rippletex, Satintex)

PREVIOUSLY PAINTED SURFACES (PERMANENT FIX)

Surface Preparation for Methods 1 and 2

1. Remove all old plaster from just above DPC (5 – 10cm) to ground

2. Apply 2 coats of latex slurry (1 part AcryLatex to 1 part cement). Apply first coat from top to bottom and allow 1 hour to dry @25 degrees C)
3. Apply a second coat from side to side ensuring that there are no holes or breaches in the slurry. Allow 48 hours to

Application Method 1:

1. Apply 1 coat PlasterBond to the dry slurry (to improve adhesion of plaster).
2. Re-plaster wall as soon as PlasterBond has dried to clear (still tacky) with plaster mixed in the following ratios:

Plaster Sand: 150 kg.

Ordinary Portland Cement: 50 kg.

AcryLatex: 15 – 20 Litres or extra to required consistency.

This mix, once applied, will have to be monitored (over a period of about 20 minutes) for sagging and cracking and reworked if necessary.

3. Allow to dry approx. 7 – 10
4. Apply 1 coat AcrylUnder. Allow to
5. Apply top coats of your Allow to dry between coats.

Note: This application is best carried out by professional damp proofers.

Application Method 2:

1. Apply 1 coat PlasterBond to the dry slurry (to improve adhesion of plaster).
2. Re-plaster wall as soon as PlasterBond has dried to clear with plaster mixed to high quality in the following ratios:

Plaster Sand: 150 kg

Ordinary Portland Cement: 50 kg Water: Add to desired consistency.

3. Allow plaster 28 days to
4. Apply 2 coats of KlinkaSeal, wet on wet, to the Allow 48 hours to dry.
5. Apply 1 coat of PlasterPrime. Allow to dry.
6. Apply top coats of your

Note: KlinkaSeal must only be applied to high quality plaster. If KlinkaSeal is applied to poor quality plaster, the system will fail. If in doubt, call the Technical Support Dept.

This application is best carried out by professional damp proofers.

BREACH OF D.P.C. (INJECTION METHOD)

Surface Preparation

1. Drill 20 – 30mm holes, 120mm apart, at a downward angle of approx. 15-20 degrees, along the line of bricks at DPC level.
2. Inject KlinkaSeal into these holes under low pressure or by gravitation, flooding the entire

3. Once this process has been carried out the holes can be closed with normal sand and cement wet with

AcryLatex.

4. This process is best carried out by professional damp proofers. Should you require further information on this process, please contact our technical

Application Method

1. Apply 1 coat of AcrylUnder. Allow to
2. Apply acrylic top coats of your

DAMP PROOFING NEW PLASTER FROM D.P.C. TO GROUND LEVEL

Note: This can only be carried out on good quality, non-friable plaster) Surface Preparation

1. Dry brush plaster to remove all loose friable particles.

Application Method

1. Apply 2 coats of KlinkaSeal, wet on wet, to the plaster from DPC to ground level. For best results the plaster below the ground level should also be Allow 48 hours to dry.
2. Apply 1 coat PlasterPrime. Allow 6 hours to dry @
3. Apply 2 coats of the top coat of your choice.

Relevant Product Information

KlinkaSeal
Theoretical Spread Rate	15m² per litre
No. of Coats required	1 to 2 coats (dependant on absorption of surface).
Application Method	Brush, Roller or Spray
Drying Time	48 hours

PlasterPrime
Theoretical Spread Rate	12-15m² per litre
No. of Coats required	1 coat
Application Method	Brush, Roller or Spray
Drying Time	6 hours @ 25°C. Overcoat within 7 days.

If your plaster is low quality and friable them prime using Paintcor’s Damp Prime

instead of KlinkaSeal as per point 1. Above.

UNSEALED FACE BRICK

Surface Preparation

1. Clean brick and allow to
2. Repair all missing or cracked pointing (i.e. the cement between the bricks). Allow to

Application Method

1. Apply coats of KlinkaSeal, wet on wet, until the surface no longer absorbs the product.

KlinkaSeal
Theoretical Spread Rate	15m² per litre
No. of Coats required	1 to 2 coats (dependant on absorption of surface).
Application Method	Brush, Roller or Spray
Drying Time	48 hours

Top Coat Choices

Elegance (Matt or Glo)
Theoretical Spread Rate	8-10m² per litre
No. of Coats required	2 Coats minimum
Application Method	Brush, Roller or Spray
Drying Time	@ 25°C @ ± 60 minutes per coat

Pristina
Theoretical Spread Rate	New Plaster: 4-5m² per litre
	Painted Smooth Plaster: 7-8m² per litre
No. of Coats required	2 Coats
Application Method	Brush, Roller or Spray
Drying Time	@ 25°C – ± 60 minutes

Essence
Theoretical Spread Rate	8m² per litre
No. of Coats required	2 coats minimum
Application Method	Brush, Roller or Spray
Drying Time	@ 25°C ± 60 minutes per coat.